Aeroplane.



A. F. RINGSTRUM, 1R.

AEROPLANE.

APPLICATION FILED AUG.9. 1915.

Patent-ed Dec. 28, 1915.

"UNITED t i ll A lwENT @lthlltlhl.

ADOLF FREDRIK RINGSTRQM, JR, 015 SKIEN, NORWAY.

AEROPLANE.

Application filed August 9, 1915.

To all whom it may concern:

Be it known that I, ADOLF FREDRIK RING- srnoir, Jr, a subject of the King of Norway, residing in the town of Skien, Norway, have invented certain new and useful Improvements in Aeroplanes, of which the following is a specification.

My invention relates to improvements in aeroplanes the object being to devise means by which the machine is maintained in horizontal position during downfall by accident and not by being steered by the horizontal rudder.

On the appended drawing an aeroplane provided with my improved device is shown in Figure 1 in elevation and in Fig. 2 in front View.

The machine is provided with the sideplanes a, which are stayed by braces b, 0, (Z, c in the ordinary manner.

7 and g are the the horizontal rudders; it is the vertical rudder; y' is the propellershaft with propeller 70; Z is the gondola; m and n are the supporting wheels, 0 and p are uprights or posts forming part of the frame of the machine.

According to my invention the center- Specification of Letters Patent.

latented Dec. 2%, 1915.

Serial No. 44,628.

portion of the frame of the machine is built with longitudinal bars 9 and 1" forming a kind of skeleton for a strip of cloth 8, which is wound around the said skeleton with comparatively wide openings between the turns.

he effect of the above described device is that the pressure exerted by the air on the underside of the top surfaces above the said openings will tend to maintain the wound around the said skeleton with coni paratively wide openings between the turns for the purpose specified.

In testimony whereof I aiiiX my signature in presence of two witnesses.

ADOLF FREDRIK muesrnoii, JR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

